P228C: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P228C on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

15 complaints filed with NHTSA mention P228C, 14 of them since 2015, across 6 different models. The component owners most often filed it under: fuel/propulsion system.

Most-reported models

VehicleComplaintsModel years reported
CHEVROLET EQUINOX52023, 2024
GMC TERRAIN42012, 2023

Manufacturer service bulletins that name P228C

46 technical service bulletins and manufacturer communications filed with NHTSA mention P228C, from 6 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CHEVROLET CORVETTE (2023, 2024), bulletin 11009469: This service bulletin provides a procedure to check the engine and bank 2 fuel injector harness to determine if its the cause of the customers concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTCs P00C6, P312B…
  • CHEVROLET CAPRICE POLICE PURSUIT (2012, 2013, 2014, 2015), bulletin 10174264: This technical bulletin provides a procedure to inspect the fuel system and replace the high pressure fuel pump if faulty for a Reduced Engine Power, MIL On, DTC P228C condition.
  • GMC TERRAIN (2011, 2012, 2013, 2014), bulletin 10174264: This technical bulletin provides a procedure to inspect the fuel system and replace the high pressure fuel pump if faulty for a Reduced Engine Power, MIL On, DTC P228C condition.
  • BUICK VERANO (2012, 2013, 2014, 2015), bulletin 10174264: This technical bulletin provides a procedure to inspect the fuel system and replace the high pressure fuel pump if faulty for a Reduced Engine Power, MIL On, DTC P228C condition.
  • CADILLAC SRX (2012, 2013, 2014, 2015), bulletin 10174264: This technical bulletin provides a procedure to inspect the fuel system and replace the high pressure fuel pump if faulty for a Reduced Engine Power, MIL On, DTC P228C condition.
  • CHEVROLET CAPTIVA (2013, 2014, 2015, 2012), bulletin 10129104: This Preliminary Information communication advises the technician on the steps to diagnose the concern, and the steps to repair the concern of Diagnostic Trouble Code P228C setting. The technician is to inspect the fuel …

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.